Just received my Gitzo 2531 and Markins Q10 - beautifully crafted equipment.
This model, of course, has the center column (that I don't plan on using). There is a configuration for "ground level set" where you can essentially remove the center column and attach the plate to the knob used to adjust the center column - and have the hook attach to the bottom of the plate.
Is there any advantage of just leaving the tripod set for "ground level set"? Would it have any impact on reduced vibration?
I read somewhere, that the center column did indeed have an effect on the vibrational characteristics of the tripod, but for the life of me I cannot find it again. I would leave it off if you can, this would speed up use when using it at ground level. Also if the center column is not locked down tight it will cause problems.
You have two options to go to ground level, reduce its weight and further improve on vibration dampening: a) Add a TB-21 base plate, eliminating the center column b) Replace the complete tripod hub with a TH-200
I pretty much removed the column immediately, so I'm not the best judge of a with and without. I used it without the column for a few months until I found a used TB-21 at a reasonable price and didn't find any obvious issues as the hub and top stub are still in use, but it wasn't heavily used during that time. I do really like the TB-21 though.